Abdominal wall

Question 1

lateral cutaneous femoral n. is ventral branch of which lumbar vertebrae?

Answer 1

L4

Question 2

What kind of innervation does lateral cutaneous femoral n. give?

Answer 2

cutaneous innervation

Question 3

where does lateral cutaneous femoral n. innervate?

Answer 3

lateral and cranial surfaces of the thigh and lateral surfaces of the hip and stifle

Question 4

external abdominal oblique m. (origin, insertion…)

Answer 4

origin: costal part-lateral surfaces of ribs 4-12, lumbar part- 13th rib and thoracolumbar fascia
innervation: last 8-9 intercostal nn. and ventral bra. of T13,L1, L2 and L3 spinal nerves
action: compression of the abdominal viscera, aids in expiration, urination, defecation, parturition, flexion of vertebral column wen right and left muscles contract unilateral and lateral bending of the vertebral column

Question 5

internal abdominal oblique m.

Answer 5

O: tuber coax, thoracolumbar fascia and inguinal ligament
I: costal arch, rectus abdominis, linea alba, and prepubic tendon by a wide aponeurosis
innervation: last few intercostal nn. and ventral brs. of T13, L1, L2, L3 spinal nerves
action: compression and support of abdominal viscera

Question 6

transversus abdominus m.

Answer 6

O: medial surfaces of the last 4-5 ribs and the transverse processes of the lumbar vertebrae via thoracolumbar fascia
I: linea alba
innervation: last few intercostal nn. and ventral brs. of T13, L1, L2, L3
action: compression and support of the abdominal viscera

Question 7

rectus abdominis m.

Answer 7

Courses between first costal cartilage and sternum and pectin Ossis pubis (by way of pubic tendon)

innervation: intercostal nn. and ventral brs. of T13, L1, L2, L3 spinal nerves
action: compression and support of the abdominal viscera; bringing the pelvis forward, flexion of the back